Resubmissions
15/03/2021, 09:09
210315-2zntzgdr72 815/03/2021, 08:51
210315-mj6e5pvb66 813/03/2021, 17:09
210313-hrcfblnjbx 8Analysis
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max time kernel
89s -
max time network
65s -
platform
windows10_x64 -
resource
win10v20201028 -
submitted
15/03/2021, 09:09
Static task
static1
Behavioral task
behavioral1
Sample
trash.exe
Resource
win7v20201028
windows7_x64
0 signatures
0 seconds
Behavioral task
behavioral2
Sample
trash.exe
Resource
win10v20201028
windows10_x64
0 signatures
0 seconds
General
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Target
trash.exe
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Size
100KB
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MD5
7f5227030be3d2ef48aa652af1ec72b0
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SHA1
202e7ac1c2aaca8fbeed4ac454ca195a33c9d064
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SHA256
4dfc17406a58c6f1ce83a73ce6dd5b343d00fe77d07dfe21d28da13631bfad90
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SHA512
4603b758416dac60cb322aae6f3566711b6a4a9b657f6448861553b45b1c737fd3180d2b0bc169ef193a2372e89aba14a4d27a25e0a5eb440ed6c4afafe5f55c
Score
8/10
Malware Config
Signatures
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Modifies extensions of user files 24 IoCs
Ransomware generally changes the extension on encrypted files.
description ioc Process File created C:\Users\Admin\Pictures\CompleteRegister.crw.4fktdp trash.exe File created C:\Users\Admin\Pictures\FormatWait.png.4fktdp trash.exe File opened for modification C:\Users\Admin\Pictures\FormatWait.png.4fktdp trash.exe File renamed C:\Users\Admin\Pictures\HideCompare.tif => C:\Users\Admin\Pictures\HideCompare.tif.4fktdp trash.exe File renamed C:\Users\Admin\Pictures\OptimizeOut.crw => C:\Users\Admin\Pictures\OptimizeOut.crw.4fktdp trash.exe File renamed C:\Users\Admin\Pictures\UnpublishExpand.crw => C:\Users\Admin\Pictures\UnpublishExpand.crw.4fktdp trash.exe File renamed C:\Users\Admin\Pictures\CompareEnter.raw => C:\Users\Admin\Pictures\CompareEnter.raw.4fktdp trash.exe File opened for modification C:\Users\Admin\Pictures\CompleteRegister.crw.4fktdp trash.exe File renamed C:\Users\Admin\Pictures\CompleteRegister.crw => C:\Users\Admin\Pictures\CompleteRegister.crw.4fktdp trash.exe File opened for modification C:\Users\Admin\Pictures\DisableCheckpoint.raw.4fktdp trash.exe File created C:\Users\Admin\Pictures\SkipResume.png.4fktdp trash.exe File created C:\Users\Admin\Pictures\CompareEnter.raw.4fktdp trash.exe File renamed C:\Users\Admin\Pictures\DisableCheckpoint.raw => C:\Users\Admin\Pictures\DisableCheckpoint.raw.4fktdp trash.exe File renamed C:\Users\Admin\Pictures\FormatWait.png => C:\Users\Admin\Pictures\FormatWait.png.4fktdp trash.exe File renamed C:\Users\Admin\Pictures\SkipResume.png => C:\Users\Admin\Pictures\SkipResume.png.4fktdp trash.exe File created C:\Users\Admin\Pictures\UnpublishExpand.crw.4fktdp trash.exe File opened for modification C:\Users\Admin\Pictures\CompareEnter.raw.4fktdp trash.exe File created C:\Users\Admin\Pictures\HideCompare.tif.4fktdp trash.exe File opened for modification C:\Users\Admin\Pictures\HideCompare.tif.4fktdp trash.exe File created C:\Users\Admin\Pictures\OptimizeOut.crw.4fktdp trash.exe File opened for modification C:\Users\Admin\Pictures\OptimizeOut.crw.4fktdp trash.exe File opened for modification C:\Users\Admin\Pictures\SkipResume.png.4fktdp trash.exe File opened for modification C:\Users\Admin\Pictures\UnpublishExpand.crw.4fktdp trash.exe File created C:\Users\Admin\Pictures\DisableCheckpoint.raw.4fktdp trash.exe -
Drops startup file 2 IoCs
description ioc Process File created C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\desktop.ini.4fktdp trash.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\desktop.ini.4fktdp trash.exe -
Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
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Suspicious use of SetThreadContext 1 IoCs
description pid Process procid_target PID 1144 set thread context of 3752 1144 trash.exe 73 -
Modifies registry class 1 IoCs
description ioc Process Key created \REGISTRY\USER\S-1-5-21-3341490333-719741536-2920803124-1000_Classes\Local Settings OpenWith.exe -
Opens file in notepad (likely ransom note) 1 IoCs
pid Process 200 NOTEPAD.EXE -
Suspicious behavior: GetForegroundWindowSpam 1 IoCs
pid Process 3784 OpenWith.exe -
Suspicious use of SetWindowsHookEx 18 IoCs
pid Process 1144 trash.exe 3784 OpenWith.exe 3784 OpenWith.exe 3784 OpenWith.exe 3784 OpenWith.exe 3784 OpenWith.exe 3784 OpenWith.exe 3784 OpenWith.exe 3784 OpenWith.exe 3784 OpenWith.exe 3784 OpenWith.exe 3784 OpenWith.exe 3784 OpenWith.exe 3784 OpenWith.exe 3784 OpenWith.exe 3784 OpenWith.exe 3784 OpenWith.exe 3784 OpenWith.exe -
Suspicious use of WriteProcessMemory 16 IoCs
description pid Process procid_target PID 1144 wrote to memory of 3752 1144 trash.exe 73 PID 1144 wrote to memory of 3752 1144 trash.exe 73 PID 1144 wrote to memory of 3752 1144 trash.exe 73 PID 1144 wrote to memory of 3752 1144 trash.exe 73 PID 1144 wrote to memory of 3752 1144 trash.exe 73 PID 1144 wrote to memory of 3752 1144 trash.exe 73 PID 1144 wrote to memory of 3752 1144 trash.exe 73 PID 1144 wrote to memory of 3752 1144 trash.exe 73 PID 1144 wrote to memory of 3752 1144 trash.exe 73 PID 1144 wrote to memory of 3752 1144 trash.exe 73 PID 1144 wrote to memory of 3752 1144 trash.exe 73 PID 1144 wrote to memory of 3752 1144 trash.exe 73 PID 1144 wrote to memory of 3752 1144 trash.exe 73 PID 1144 wrote to memory of 3752 1144 trash.exe 73 PID 3784 wrote to memory of 200 3784 OpenWith.exe 85 PID 3784 wrote to memory of 200 3784 OpenWith.exe 85
Processes
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C:\Users\Admin\AppData\Local\Temp\trash.exe"C:\Users\Admin\AppData\Local\Temp\trash.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1144 -
C:\Users\Admin\AppData\Local\Temp\trash.exeC:\Users\Admin\AppData\Local\Temp\trash2⤵
- Modifies extensions of user files
- Drops startup file
PID:3752
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C:\Windows\system32\OpenWith.exeC:\Windows\system32\OpenWith.exe -Embedding1⤵
- Modifies registry class
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:3784 -
C:\Windows\system32\NOTEPAD.EXE"C:\Windows\system32\NOTEPAD.EXE" C:\Users\Admin\Desktop\SplitClear.zip.4fktdp2⤵
- Opens file in notepad (likely ransom note)
PID:200
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